CRUELLER is a playable word

cruel Scrabble® Dictionary

adjective
crueler, cruelest or crueller, cruellest
indifferent to the pain of others
(adverb) cruelly
45 Playable Words can be made from "CRUELLER"
   2-Letter Words (3 found)
   3-Letter Words (15 found)
   4-Letter Words (14 found)
   5-Letter Words (8 found)
   6-Letter Words (2 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)